4) \(\dfrac{x-\sqrt{x}}{1-\sqrt{2\left(x^2-x+1\right)}}\ge1\)

5)\(x^2+x+1>3\sqrt{x}\left(x+1\right)\)

6)\(\dfrac{1}{1-x^2}>\dfrac{3x}{\sqrt{1-x^2}}-1\)

nữa ạ

1) \(x+\sqrt{1-x^2}< x\sqrt{1-x^2}\)

2)\(\dfrac{1}{\sqrt{2x^2+3x-3}}>\dfrac{1}{2x-1}\)

3)\(5\sqrt{x}+\dfrac{5}{2\sqrt{x}}< 2x+\dfrac{1}{2x}+4\)

giúp mình ạ

a) \(\left|x+3\right|+\left|x+1\right|-x+4\le0\)

b)\(\left|x^2-x-3\right|\ge2x+3\)

c) \(\left|3x-1\right|< x^2-x+2\)